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(#) Using Wrong AppCompat Method

!!! WARNING: Using Wrong AppCompat Method
   This is a warning.

Id
:   `AppCompatMethod`
Summary
:   Using Wrong AppCompat Method
Note
:   **This issue is disabled by default**; use `--enable AppCompatMethod`
Severity
:   Warning
Category
:   Correctness
Platform
:   Android
Vendor
:   Android Open Source Project
Feedback
:   https://issuetracker.google.com/issues/new?component=192708
Since
:   Initial
Affects
:   Kotlin and Java files
Editing
:   This check runs on the fly in the IDE editor
See
:   https://developer.android.com/topic/libraries/support-library/
Implementation
:   [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-checks/src/main/java/com/android/tools/lint/checks/AppCompatCallDetector.java)
Tests
:   [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/AppCompatCallDetectorTest.java)
Copyright Year
:   2014

When using the appcompat library, there are some methods you should be
calling instead of the normal ones; for example, `getSupportActionBar()`
instead of `getActionBar()`. This lint check looks for calls to the
wrong method.

!!! Tip
   This lint check has an associated quickfix available in the IDE.

(##) Example

Here is an example of lint warnings produced by this check:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text
src/test/pkg/AppCompatTest.java:5:Warning: Should use
getSupportActionBar instead of getActionBar name [AppCompatMethod]
    getActionBar();                                     // ERROR
    --------------
src/test/pkg/AppCompatTest.java:8:Warning: Should use
startSupportActionMode instead of startActionMode name
[AppCompatMethod]
    startActionMode(null);                              // ERROR
    ---------------------
src/test/pkg/AppCompatTest.java:11:Warning: Should use
supportRequestWindowFeature instead of requestWindowFeature name
[AppCompatMethod]
    requestWindowFeature(0);                            // ERROR
    -----------------------
src/test/pkg/AppCompatTest.java:14:Warning: Should use
setSupportProgressBarVisibility instead of setProgressBarVisibility name
[AppCompatMethod]
    setProgressBarVisibility(true);                     // ERROR
    ------------------------------
src/test/pkg/AppCompatTest.java:15:Warning: Should use
setSupportProgressBarIndeterminate instead of
setProgressBarIndeterminate name [AppCompatMethod]
    setProgressBarIndeterminate(true);                  // ERROR
    ---------------------------------
src/test/pkg/AppCompatTest.java:16:Warning: Should use
setSupportProgressBarIndeterminateVisibility instead of
setProgressBarIndeterminateVisibility name [AppCompatMethod]
    setProgressBarIndeterminateVisibility(true);        // ERROR
    -------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Here is the source file referenced above:

`src/test/pkg/AppCompatTest.java`:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~java linenumbers
package test.pkg;

public class AppCompatTest extends IntermediateActivity {
    public void test() {
        getActionBar();                                     // ERROR
        getSupportActionBar();                              // OK

        startActionMode(null);                              // ERROR
        startSupportActionMode(null);                       // OK

        requestWindowFeature(0);                            // ERROR
        supportRequestWindowFeature(0);                     // OK

        setProgressBarVisibility(true);                     // ERROR
        setProgressBarIndeterminate(true);                  // ERROR
        setProgressBarIndeterminateVisibility(true);        // ERROR

        setSupportProgressBarVisibility(true);              // OK
        setSupportProgressBarIndeterminate(true);           // OK
        setSupportProgressBarIndeterminateVisibility(true); // OK
    }
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can also visit the
[source code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/AppCompatCallDetectorTest.java)
for the unit tests for this check to see additional scenarios.

The above example was automatically extracted from the first unit test
found for this lint check, `AppCompatCallDetector.testArgumentsSupportV4`.
To report a problem with this extracted sample, visit
https://issuetracker.google.com/issues/new?component=192708.

(##) Suppressing

You can suppress false positives using one of the following mechanisms:

* Using a suppression annotation like this on the enclosing
  element:

  ```kt
  // Kotlin
  @Suppress("AppCompatMethod")
  fun method() {
     getActionBar(...)
  }
  ```

  or

  ```java
  // Java
  @SuppressWarnings("AppCompatMethod")
  void method() {
     getActionBar(...);
  }
  ```

* Using a suppression comment like this on the line above:

  ```kt
  //noinspection AppCompatMethod
  problematicStatement()
  ```

* Using a special `lint.xml` file in the source tree which turns off
  the check in that folder and any sub folder. A simple file might look
  like this:
  ```xml
  &lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;lint&gt;
      &lt;issue id="AppCompatMethod" severity="ignore" /&gt;
  &lt;/lint&gt;
  ```
  Instead of `ignore` you can also change the severity here, for
  example from `error` to `warning`. You can find additional
  documentation on how to filter issues by path, regular expression and
  so on
  [here](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html).

* In Gradle projects, using the DSL syntax to configure lint. For
  example, you can use something like
  ```gradle
  lintOptions {
      disable 'AppCompatMethod'
  }
  ```
  In Android projects this should be nested inside an `android { }`
  block.

* For manual invocations of `lint`, using the `--ignore` flag:
  ```
  $ lint --ignore AppCompatMethod ...`
  ```

* Last, but not least, using baselines, as discussed
  [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).

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